One day, you will find yourself standing alone on the same street you were standing with him few months ago and it will hurt less this time. And you will realize that he wasn't even there with you in the first place.
You think you were happy with him, but when he left you, you realize that the happiness you felt wasn't authentic. Now, all you are mandate to remember are all the nights he sent mixed signals and all the nights you doubted if what you had will work out. But no, it didn't.